Kev tsim kho ntawm Lile River Choj

Peb lub tuam txhab tsuas yog muab cov khoom siv prestressed steel strands rau prefabrication ntawm qhob txuas hniav thiab nyob rau cables rau cable-nyob choj luv yees hauv qhov project no.

1. Lub superstructure ntawm lub ntsiab choj yog nyob rau hauv daim ntawv ntawm prestressed qhob variable cross-section box girder, dav ntawm lub ntsiab choj yog 33.5 meters. Tus choj txoj kev yog tsim nyob rau hauv slats, nrog ib tug dav ntawm 12.5 meters, txoj kev choj adopts ib tug 30-meter standard span me me girder qauv. Muaj tag nrho 96 lub thawv me me hauv 30-meter Lile River Choj, thiab nqa qhov hnyav ntawm ib lub thawv girder yog li 100 tons.

2. Lub cable nyob twj ywm yog ua los ntawm 15-91 epoxy sprayed steel strand nrog ob txheej HDPE tiv thaiv, ib leeg strand diameterφ15.2mm, tensile zog fpk = 1860MPa. (tus qauv tus nqi)

3. Cov khoom siv hluav taws xob ntawm tag nrho cov prestressed steel strands siv hauv qhov project ua raws li cov kev cai ntawm "Steel Strands for Prestressed Concrete" (GB/T5224-2014) thiab EN10138-3: 2009, lawv cov khoom tiv thaiv corrosion ua tau raws li cov cai ntawm ASTM A882 / A882M-02a thiab ISO 14655: 1999. Kev qaug zog tsis kam ntawm cov kab hluav taws xob nyob hauv yuav tsum ua kom tau raws li qhov kev txwv siab ntawm σmax = 0.45fptk, qhov kev ntxhov siab amplitude ntawm 200MPa, thiab cov hlau tawg ntawm ≤2% tom qab 2 lab lub voj voog.

1.Prestressed qhob (PC) strands feem ntau yog siv rau hauv kev tsim kho cov kab teeb ci los muab lub zog tensile thiab kev txhawb zog.

2.Cov strands no feem ntau pre-tensioned los yog post-tensioned nyob rau hauv lub pob zeb kom nce load-bearing muaj peev xwm thiab txo cov cracking.

3.Kev siv cov PC strands pab txhim kho tag nrho cov qauv kev ua tau zoo thiab ua haujlwm ntev ntawm cov kab teeb ci. Prestressed pob zeb (PC) cov hlua feem ntau yog siv rau hauv kev tsim kho cov kab teeb ci los muab lub zog tensile thiab kev txhawb zog.

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